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(No Model.) 2 Sheets-She et 1.

0. '13. THOMPSON. APPARATUS FOR INSERTINGILUGS IN BRUSH HEADS.

No. 485,670. Patented Nov. 8, 1892.

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(No Model.) v 2 SheetsSheet 2,

G. E. THOMPSON. APPARATUS FOR INSERTING PLUGS IN BRUSH HEADS.

N0. 485,670 Patented Nov. 8, 1892'.

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UNITED STATES PATENT OFFrcE.

CHARLES E. THOMPSON, OF LANSINGBURG, NEW YORK, ASSIGNOR TO STEPHEN PALMER, OF SAME PLACE.

APPARATUS FOR INSERTING PLUGS IN BRUSH-HEADS.

SPECIFICATION forming part of Letters Patent No. 485,670, dated November 8, 1892.

Application filed January 18, 1892. Serial No. 418,408. (No model.)

To 00 whom it may concern:

Be it known that I, CHARLES E. THOMPSON, a citizen of the United States, residing at Lansingburg, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Apparatus for Insert-- ing Plugs in Brush-Heads, of which the following is a specification.

My invention relates to such improvements; and it consists of the novel construction and combination of parts hereinafter described and subsequently claimed. a

Reference may be had to the accompanying drawings, and the letters of reference marked thereon,which form a part of this specification.

Similar letters refer to similar parts in the several figures therein.

Figure 1 of the drawings is a top plan view of my improved apparatus for plugging brushheads. Fig. 2 is a side elevation of the same, showing a brush head in position to be plugged. Fig. 3 is a vertical cross section taken on the broken line 3 3 in Fig. 2. Fig. 4 is a view in perspective of one of the movable brush-supporting plates detached.

My improved apparatus is especially applicable for inserting a wooden or metallic plug in a brush-head formed by inserting a single knot of bristles in a tapered metallic ferrule or head-band. The knot of bristles is first inserted in the head-band so that the knot projects from the smaller or contracted end of the band, after which a plug is forced into the middle portion of the knot, of the proper size to expand the same and tightly compress the bristles between the plug and band to prevent the bristles from working loose and escaping from the band.

A is the bed-plate of the apparatus, provided with the guideways A on its upper side, the pin opening or slot A extending longitudinally of the bed-plate, and the upright A at one end. The brush-carrier is composed of a block B, having on its lower side grooves B, adapted to receive the guideways on the bed-plate, and a series of brush-supporting slide-plates B controlled by the springs B There are two series of plates, the inner ends of one series being contiguous to and abutting upon the inner ends of the other series at about the middle part of the carrier-groove in which they slide, as shown in Fig. 1. The plates are movable transversely of the ways and are held in the groove or recess in the upper side of the carrier-block by means of the binding-plates B secured to the block, as by the screws B The springs may be of any known form, being shown in the form of coil-springs, the ends of the springs being secured to the'carrier-block by the screws B. The upright A has an offsetor arm A, supporting in a suitable slideway the follower A the upper end of which is provided with an enlarged part or head A, adapted to engage with the arm A and limit the downward movement of the follower.

The brush, comprising the head-band O and knot of bristles O, is placed upon the slideplates B in an inverted position, as shown in Figs. 2 and 3, the carrier occupying the position indicated by dotted lines in Fig. 2. The point of a conical pin D, which I term the leader-pin, is then inserted in the projecting end of the knot of bristles and forced down the longitudinal center of the knot to about the position indicated by dotted lines in Fig. 2. The point of the pin afterpiercing the brush-head passes in between the contiguous ends of the slide-plates at B forcing them apart, and through the aperture 13 in the carrier and the slot A in the bed-plate. A plug P is then placed upon the base or upper end of the leader-pin in the position shown in Fig. 2, and the follower raised to a position which will permit the brush-head and plug to pass under it. The carrier is then slid along the guideways on the bedplate until it reaches a position where the plug is in the path of the follower, which is lowered upon the plug and forced downward to the position shown in Fig. 3, driving the plug to its seat in that part of the knot of bristles inclosed by thehead band. The leader-pin is driven by the plug from the head and falls through the carrier-aperture and bed-plate slot; The follower is again raised, the carrier slid back to the position indicated by dotted lines in Fig.2, and the brush-head removed to be trimmed and finished in any desired manner. The plug is preferably cylindrical in form with convexed ends, and the base or upper end of the leader-pin and the lower end of the follower are concaved to fit and form seats for the convexed ends of the plug while inserting the same, as shown. When so formed,the plugis securely held between its seats, and such seats prevent the edges of the plug from chipping or spreading.

As the conical leader-pin is driven through the knot of bristles and carrier-aperture the inner ends of the slide-plates closely embrace the same and support the bristles and prevent them from following the leader pin through the carrier-aperture. The yielding springs B permit the slide-plates in the two series to slide outwardly and make room for the base or larger end of the pin as itpasses between the contiguous ends of the two series of plates, and also serve to cause the plates to slide inwardly to the position shown in Fig. 1 after the pin has passed out from between their ends. By providing the follower with an adjustable "stop to regulate its movements 1 am able to easilyand accurately regulate the position of the plugin the brushhead.

I have shown the head of the follower provided with a screw-threaded aperture-adapted to receive and fit the screw-threaded upper end of thefollower. The follower is forced down into the brush-head when inserting the plug until the head strikes the upper side of the arm A, whichserves as a stop to limit its downward movement. By turning the head upon the screw-threaded follower in one direction or the reverse the limit of movement of the follower can be increased or diminished. The follower can be actuated by blows from a hammer, by a press, or in any known manner.

VVhatI claim as new, and desire to secure by Letters Patent, is

1. An apertured bed-plate and an apertured brush-support comprising an apertured block and two series of spring-controlled slide-plates having the inner ends of the individual plates in one series contiguous to the inner ends of the individual plates in the other series and movable to and from each other,in combination with a leader-pin, a follower-support, a follower movable in a fixed support toward and from the brush-support, and an adjustable stop for regulating its movements, substantially as described.

2. In an apparatus for inserting plugs in brush-heads, asupport for the brush-head,

h comprising an apertured block and two series of spring-controlled slide-plates having the inner ends of the individual plates in one series contiguous to the inner ends of the individual plates in the other series an-dmovable to and from each other, substantially as described.

In testimony whereof I have hereunto set my hand this 14th day of January, 1892.

"CHAS. E. THOMPSON.

lVitnesses:

GEO. A. MOSHER, V FRANK O. CURTIS. 

